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Field metabolic rate and body water turnover of the red fox (Vulpes vulpes) in Australia

journal contribution
posted on 2003-01-01, 00:00 authored by R Winstanley, William Buttemer, G Saunders
We measured the daily energy expenditure of free-living red foxes Vulpes vulpes occupying a temperate region of New South Wales, Australia. Field metabolic rate (FMR) and body water turnover were estimated using doubly labelled water. In autumn, male body mass ranged from 5 to 6.1 kg (mean 5.6 kg) and their FMRs averaged 2328 kJ/day. Female body mass in autumn ranged from 4.9 to 6.6 kg (mean 5.4 kg) and their FMRs averaged 1681 kJ/day. Body water influx for males and females was 314 and 251 mL/day, respectively. Body composition of each fox was analysed after the field measurements and revealed a significant correlation between body water content, as estimated from tritiated water space, and body lipids (r2 = 0.72). This supports the use of body water determination as a potentially non-destructive method to gauge body condition.

History

Journal

Mammal review

Volume

33

Issue

3-4

Pagination

295 - 301

Publisher

Wiley - Blackwell Publishing

Location

Oxford, England

ISSN

0305-1838

eISSN

1365-2907

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2003, Mammal Society

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